Plate Tectonics - Lesson 4 - Part 2 of 8

Planet of Man Series -- Jigsaw Fit (30minutes)
Host; Tuzo Wilson
Plate Tectonics - Lesson 4 - Part 2 of 8
•Early 70's plate tectonics -- enigma of mountains discovered with the theory of plate tectonics
•Animation illustrating the slabs of individual plates from around the world.
•Crust 60 miles thick
•Isostatic rebound from the last ice age.
• Hudson Bay is distingusished from this process by a indisntct shoreline and raised beach's
•Plate name -- Euarasian Indo-Australian, African, American , Antarctic, Nazca, Pacific Plates.
• Rock Types - Basalt at the tops of the spreading boundaries, upper layer of the plate, Perioditite (magnesium rich) lower layer of the plate.
•Underwater eruption -- lava come into contact with the cold water forms pillow like shapes "Pillow lava"
•Footage showing underwater eruptions.
•Iceland -- entirely created from the spreading ridge of an active zone.
•Iceland Geothermal uses
• Mid-Atlantic oceanic ridge follows the shorelines of both Africa and South America. 200 million years to open to its current width.
•Red Sea clearly shows also how Africa and Arabia fitted together/.
•East Africa -- Great Rift Valley, early separation of this process like the Red Sea separation. The entire Rift Valley has volcanism.
•Transform fault -- no mountains and no volcanoes but earthquakes are produced. It's the result of plates sliding past one another. These intense earthquakes occur mostly in the deep ocean basins. But sometimes they come on the continent -- San Andres Fault one example 700 miles long.
•Animation showing the transform fault movement.
•San Francisco earthquake lies along the San Andreas fault.
•Footage of the 1906 earthquake
•Entire city was destroyed

Category:

Science & Technology

Tags:

• tectonics
• tuzo
• geology
• fault
• continental
• drift
• geological
• earth

[worldethq]

Find out when next earthquake occurs:

WORLD-EARTHQUAKES . COM

[asas2jh]

Thanks

[SilenzioDiEsistenza]

that was their strength, and at the same time weakness, as this endeavour to find all inclusive science may be endless, even when physics, biophysics, neurology and all sciences are combined by one theory... there is no saying this theory is more then a hypothesis as definite as the lives of those who keep it -in mind-

[SilenzioDiEsistenza]

@VanHaybrook i'm sure that only counts to pseudo-scientists... i've noticed that the greater scientists take with them a healthy amount of skepticism, even to the most evident laws of nature... look at richard feynmann, einstein... even though they were not perfectly free of beliefs, they came close to some kind of mystical view to science, where no truth is definite but at the same time the desire to become all-inclusive, embracing all that is reality through science..

[coturnix19]

@VanHaybrook whis religion is supported by the direct observation of gods with gps systems?

[Jeyzze]

nice video very interesting!!!

[poetryinmotion629]

Thank u 4 this series!

[DonnieTheShitworm]

have you studied geology?

[VanHaybrook]

If a theory becomes 'common knowledge' it is called a religion! And plate tectonics seems to be a religion within 'science'.

[forman1200]

@ 4:45 Basalt-Man rises out of the depths.